140899 has 4 divisors (see below), whose sum is σ = 153720. Its totient is φ = 128080.

The previous prime is 140897. The next prime is 140909. The reversal of 140899 is 998041.

140899 = T₁₀₂ + T₁₀₃ + ... + T₁₂₃.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998041 = 11 ⋅90731.

It is a cyclic number.

It is not a de Polignac number, because 140899 - 2¹ = 140897 is a prime.

It is a Duffinian number.

140899 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 140899.

It is not an unprimeable number, because it can be changed into a prime (140891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6394 + ... + 6415.

It is an arithmetic number, because the mean of its divisors is an integer number (38430).

2¹⁴⁰⁸⁹⁹ is an apocalyptic number.

140899 is a deficient number, since it is larger than the sum of its proper divisors (12821).

140899 is a wasteful number, since it uses less digits than its factorization.

140899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12820.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 140899 is about 375.3651555486. The cubic root of 140899 is about 52.0358480622.

The spelling of 140899 in words is "one hundred forty thousand, eight hundred ninety-nine".